Sophie and Jake fly in to volunteer at a camp for underprivileged kids with Ryan and Josie. They particularly feel a need to connect with Jet, a boy whose brother was recently murdered due to gang violence.

As Sophie and Josie investigate the meaning behind the local landmarks names, they find a long-forgotten romance and possibly lost treasure-a golden cross that was stolen by Hans, a German immigrant who suffered persecution due to his nationality who went over the edge.

After Josie shares the mystery with Jet, he manages to solve the riddle and find the missing golden cross.